Extra resources for A Nekhoroshev theorem for some infinite dimensional systems

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The lack of boulderlike blocks argues against their being volcanic flows, although they could be volcanic ash. Ultimately, however, most of the layers probably originated in impact debris. On the moon, scientists observe overlapping rings of impact debris, which mark craters of differing ages. Similarly, Mars is so heavily cratered that the upper crust has been stirred up like soil tilled by a gardener. Water and wind then scattered this material. Blue Mars? IN A SENSE, scientists’ ideas about early Mars are more uncertain than they have ever been.

As on Earth, storm systems often spiral southward from the northern polar A THIRD WAY regions. But the largest dust storms typically start during the southern spring as the planet rapidly heats up. Periodically they coalesce and come to encircle the entire planet. Mars Global Surveyor closely followed the evolution of a four-month global dust storm that started in June 2001. Contrary to scientists’ expectations, it was not, in fact, one single global storm, but the confluence of several regional storms.

The long incubation of these illnesses, however— BSE incubates for up to eight years— means these experiments must continue for several years. S. livestock so far seem to be safe from CWD, the same cannot be said of other animals. If an infected deer dies in the forest and nobody is there to see it, plenty of coyotes, bobcats and other carnivores will, and they will gladly scavenge what remains of the wasted carcass. Although many states have uncovered CWD, other states “are looking darn hard,” Miller says, but have not found it— among them, Arizona, Kansas, Michigan, Montana, Nevada and New Jersey.